Process for recovering oil from an oil-bearing formation and treating produced water containing anti-scaling additives

摘要

C&B Ref. No.: 6900-006 A method of recovering oil from an oil-bearing formation including recovering an oil water mixture from the oil-bearing formation and separating produced water from the oil-water mixture. The produced water includes phosphonate anti-scalant compounds. An oxidant is mixed with the produced water to deactivate the phosphonate anti-scalant compounds, thereby permitting dissolved solids in the produced water to precipitate. After deactivating the phosphonate anti-scalant compounds, the produced water is directed into a ceramic membrane which filters the produced water, producing a permeate stream and a retentate stream having suspended solids and precipitants therein. WATER + ANTI INJECTION INTO OIL-BEARING (OPTIONAL) OIL-WATER ANTI-SCALANT MIXTURE CHEMICAL PRODUCTION ADDITION TO & MIXTURE AT COLLECTION PRODUCING PRIMARY OIL-WATER OIL MIXED REACTOR - OXIDANT DE-ACTIVATION OF ADDITION ANTI-SCALANTS CLARIFICATION UNIT - MEMBRANE OPTIONAL SEPARATION UNIT SLUDGE DEOILED, TSS